Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, an L298N DC motor driver, force sensing resistors, pushbuttons, resistors, a 4xAA battery pack, and motors with wheels. The circuit is designed to control the motors based on inputs from the force sensing resistor and pushbuttons.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

L298N DC Motor Driver

• Description: A dual H-bridge motor driver that allows control of the speed and direction of two DC motors.
• Pins: OUT1, OUT2, 12V, GND, 5V, OUT3, OUT4, 5V-ENA-JMP-I, 5V-ENA-JMP-O, +5V-J1, +5V-J2, ENA, IN1, IN2, IN3, IN4, ENB

Force Sensing Resistor

• Description: A resistor whose resistance changes when a force or pressure is applied.
• Pins: pin 0, pin 1

Resistor

• Description: A passive electrical component with a resistance of 220 Ohms.
• Pins: pin1, pin2

Pushbutton

• Description: A simple switch mechanism for controlling some aspect of a machine or a process.
• Pins: Pin 3 (out), Pin 4 (out), Pin 1 (in), Pin 2 (in)

4xAA Battery Pack

• Description: A battery holder for four AA batteries.
• Pins: POS, NEG

Motor and Wheels

• Description: A DC motor with attached wheels.
• Pins: vcc, GND

Wiring Details

Arduino UNO

• A0: Connected to pin1 of the Resistor.
• GND: Connected to GND of the Arduino UNO, NEG of the 4xAA battery pack, and GND of the L298N DC motor driver.
• 3.3V: Connected to pin 0 of the Force Sensing Resistor.
• D5: Connected to Pin 3 (out) of the first Pushbutton.
• D4: Connected to Pin 3 (out) of the second Pushbutton.
• D3: Connected to Pin 3 (out) of the third Pushbutton.
• 5V: Connected to 5V of the L298N DC motor driver.
• D11: Connected to IN4 of the L298N DC motor driver.
• D10: Connected to IN3 of the L298N DC motor driver.
• D9: Connected to IN2 of the L298N DC motor driver.
• D8: Connected to IN1 of the L298N DC motor driver.
• D7: Connected to ENB of the L298N DC motor driver.
• D6: Connected to ENA of the L298N DC motor driver.

L298N DC Motor Driver

• 5V: Connected to 5V of the Arduino UNO.
• GND: Connected to GND of the Arduino UNO and NEG of the 4xAA battery pack.
• 12V: Connected to POS of the 4xAA battery pack.
• IN4: Connected to D11 of the Arduino UNO.
• IN3: Connected to D10 of the Arduino UNO.
• IN2: Connected to D9 of the Arduino UNO.
• IN1: Connected to D8 of the Arduino UNO.
• ENB: Connected to D7 of the Arduino UNO.
• ENA: Connected to D6 of the Arduino UNO.
• OUT1: Connected to vcc of the second Motor and Wheels.
• OUT2: Connected to GND of the second Motor and Wheels.
• OUT3: Connected to GND of the first Motor and Wheels.
• OUT4: Connected to vcc of the first Motor and Wheels.

Force Sensing Resistor

• pin 0: Connected to 3.3V of the Arduino UNO.
• pin 1: Connected to pin2 of the Resistor.

Resistor

• pin1: Connected to A0 of the Arduino UNO.
• pin2: Connected to pin 1 of the Force Sensing Resistor.

Pushbutton (First)

• Pin 1 (in): Connected to GND of the Arduino UNO.
• Pin 3 (out): Connected to D5 of the Arduino UNO.

Pushbutton (Second)

• Pin 1 (in): Connected to GND of the Arduino UNO.
• Pin 3 (out): Connected to D4 of the Arduino UNO.

Pushbutton (Third)

• Pin 1 (in): Connected to GND of the Arduino UNO.
• Pin 3 (out): Connected to D3 of the Arduino UNO.

4xAA Battery Pack

• POS: Connected to 12V of the L298N DC motor driver.
• NEG: Connected to GND of the Arduino UNO and GND of the L298N DC motor driver.

Motor and Wheels (First)

• vcc: Connected to OUT4 of the L298N DC motor driver.
• GND: Connected to OUT3 of the L298N DC motor driver.

Motor and Wheels (Second)

• vcc: Connected to OUT1 of the L298N DC motor driver.
• GND: Connected to OUT2 of the L298N DC motor driver.

Documented Code

Arduino UNO Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Additional Documentation (documentation.txt)